I would like to set filters pointing to IMAP INBOX and SENT MAIL and copy mails to Common Folders. What I get during creation of the filters is an error message saying „Invalid account for folder”. What am I doing wrong or is there a restriction that filters do not work between IMAP folders and Common folders.

Interestingly, when highlighting one of the IMAP folders, in the left lower corner of the screen the name of the account appears, and when highlighting one of the Common Folders, the same account name appears and beside it „P3” after a blank.